Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.248 Home All releases olderv2.1.247 v2.1.250newer
Claude Code v2.1.248

Telemetry opt-out variables grouped in one set

Under the hood
Useful2 Signal2
Telemetry

Telemetry opt-out environment variables are now collected in one set alongside a forwarded allowlist.

What

The environment variables that suppress non-essential traffic and telemetry are now collected into a single set, next to a larger allowlist of provider and proxy variables that is forwarded to subprocesses.

Evidence

CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.248 →